Frequent Disconnects

Lately I have been having some major connectivity problems off and on. The first time I called my ISP(ATT DSL) about it, they said the problem was indeed on there end. The tech rebuilt/reprogrammed the line, and things seemed fine for about an hour or two, but then the problems persisted so I called ATT the next day and they said the problem was on my end. I forgot the exact error message the tech repeated, but she said it was some sort of authentication issue. So I reset my modem(Actiontec GT724R)and router(Linksys E2000) to factory setting using a 30/30/30 reset on the router. I then reconfigured the network into a transparent bridge mode, with the network password ATT gave me when registering my modem through there automated set up process. Since then things have been more stable, but still not as stable as before. For example, this log covers a short period where I had 2 disconnects back to back in less then a 5 min window. Not to shortly after I had copied this log I got yet another disconnect but assumed this log should cover enough time frame to be able to pin point exactly where the problem is.http://pastebin.com/gsZFuhMZ
Thanks for any assistance!